Well-known UW-Madison Campus IP address ranges and hosts

This document is to provide a handy reference for IP address ranges commonly used on the UW-Madison Campus.

DoIT Network Services recognizes the need for campus network administrators to allow or block certain IP address ranges to the infrastructure that they manage. An attempt is made to keep this document the authoritative source but its contents are not guaranteed to be error free.

Campus DNS Servers

IPv4

128.104.254.254

144.92.254.254

IPv6

2607:F388::53:1

2607:F388::53:2

The Campus DNS infrastructure is implemented by a pool of redundant dns servers that answer dns requests to these addresses. These DNS servers are for use on the UW-Madison campus only. If you are off-campus, please use your provider's DNS servers.

To request changes or updates to the campus DNS service, please contact the DoIT HelpDesk.

Security Scanning

The list of addresses used for network management and security scanning can be found here.

UWNet & Eduroam Wireless and Wired Authenticated Networks

The UWNet & Eduroam wireless clients utilize private IP addresses from the campus routable range mentioned in the RFC1918 section of this document. These clients are routable to campus and use NAT/PAT behind pools of public IP addresses listed below for Internet access.